Headers, What size primarys for mostly stock 350.

[y5mgisi]

Just thinking about replcing the headers on my 78. its got a pretty much stock 350 in it. I think it has some kind of "R.V. towing cam", edelbrock intake/carb and dual 2.5" exhaust. So what do you think? 1-5/8"?

 

[y5mgisi]

Thinking these cheapy headmens will be the ticket.

http://www.summitracing.com/parts/HED-69090/

 

[76zimmer]

Just thinking about replcing the headers on my 78. its got a pretty much stock 350 in it. I think it has some kind of "R.V. towing cam", edelbrock intake/carb and dual 2.5" exhaust. So what do you think? 1-5/8"?

right size, get the longest primary that you can to help torque.

 

[63chevyll]

1 5/8 with 2 1/2 collectors would be ideal. A 3 collector would have to be reduced anyway

 

[89GMCK5]

There is a good thread that I caught a while back on Hedman headers, fit, interference, etc.

http://coloradok5.com/forums/showthread.php?t=213472&page=15

 

[folkenheath]

Hooker comps, 1 5/8 long tubes, with 2.5" collector.